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This kind of stright shank twist drill bits are made of special high speed steel with titanium coated surface plus fully ground process, which makes it sharp edges, good abrasion resistance and strong strength. You will find it better than other ordinary drill bits when drilling hard steel plate and stainless steel materials.
The size ranges from 1.0mm to 13mm, the size interval is 0.1mm.
The size 13.5 is special for railway guid drilling.
10 pcs per plastic bag below 7.6mm drill bits.
5 pcs per plastic bag above 7.5mm drill bits
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welcom to inquiry and order.
HSS titanium coated straight shank twist drills of 6mm